/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Alexander Chingarev, Bruno Lowagie, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.log.Counter;
import com.itextpdf.text.log.CounterFactory;
import com.itextpdf.text.pdf.interfaces.PdfAConformance;
import com.itextpdf.text.pdf.interfaces.PdfIsoConformance;
import com.itextpdf.text.pdf.internal.PdfAChecker;
import com.itextpdf.text.pdf.internal.PdfAConformanceImp;
import com.itextpdf.text.xml.xmp.PdfAXmpWriter;
import com.itextpdf.text.xml.xmp.XmpWriter;
import com.itextpdf.xmp.XMPConst;
import com.itextpdf.xmp.XMPMeta;
import com.itextpdf.xmp.impl.XMPMetaParser;
import com.itextpdf.xmp.properties.XMPProperty;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
/**
* Extension to PdfStamperImp that will attempt to keep a file
* in conformance with the PDF/A standard.
*/
public class PdfAStamperImp extends PdfStamperImp {
protected Counter COUNTER = CounterFactory.getCounter(PdfAStamper.class);
XMPMeta xmpMeta = null;
/**
* Creates new PdfStamperImp.
*
* @param reader reads the PDF
* @param os the output destination
* @param pdfVersion the new pdf version or '\0' to keep the same version as the original document
* @param append
* @param conformanceLevel PDF/A conformance level of a new PDF document
* @throws DocumentException on error
* @throws IOException
*/
PdfAStamperImp(PdfReader reader, OutputStream os, char pdfVersion, boolean append, PdfAConformanceLevel conformanceLevel) throws DocumentException, IOException {
super(reader, os, pdfVersion, append);
((PdfAConformance) pdfIsoConformance).setConformanceLevel(conformanceLevel);
PdfAWriter.setPdfVersion(this, conformanceLevel);
readPdfAInfo();
}
protected void readColorProfile() {
PdfObject outputIntents = reader.getCatalog().getAsArray(PdfName.OUTPUTINTENTS);
if (outputIntents != null && ((PdfArray) outputIntents).size() > 0) {
PdfStream iccProfileStream = null;
for (int i = 0; i < ((PdfArray) outputIntents).size(); i++) {
PdfDictionary outputIntentDictionary = ((PdfArray) outputIntents).getAsDict(i);
if (outputIntentDictionary != null) {
PdfName gts = outputIntentDictionary.getAsName(PdfName.S);
if (iccProfileStream == null || PdfName.GTS_PDFA1.equals(gts)) {
iccProfileStream = outputIntentDictionary.getAsStream(PdfName.DESTOUTPUTPROFILE);
if (iccProfileStream != null && PdfName.GTS_PDFA1.equals(gts))
break;
}
}
}
if (iccProfileStream instanceof PRStream) {
try {
colorProfile = ICC_Profile.getInstance(PdfReader.getStreamBytes((PRStream)iccProfileStream));
} catch(IOException exc) {
throw new ExceptionConverter(exc);
}
}
}
}
/**
* @see PdfStamperImp#setOutputIntents(String, String, String, String, ICC_Profile)
*/
public void setOutputIntents(final String outputConditionIdentifier, final String outputCondition, final String registryName, final String info, final ICC_Profile colorProfile) throws IOException {
super.setOutputIntents(outputConditionIdentifier, outputCondition, registryName, info, colorProfile);
PdfArray a = extraCatalog.getAsArray(PdfName.OUTPUTINTENTS);
if (a != null) {
PdfDictionary d = a.getAsDict(0);
if (d != null) {
d.put(PdfName.S, PdfName.GTS_PDFA1);
}
}
}
/**
* Always throws an exception since PDF/X conformance level cannot be set for PDF/A conformant documents.
*
* @param pdfx
*/
public void setPDFXConformance(final int pdfx) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("pdfx.conformance.cannot.be.set.for.PdfAStamperImp.instance"));
}
/**
* @see com.itextpdf.text.pdf.PdfStamperImp#getTtfUnicodeWriter()
*/
@Override
protected TtfUnicodeWriter getTtfUnicodeWriter() {
if (ttfUnicodeWriter == null)
ttfUnicodeWriter = new PdfATtfUnicodeWriter(this, ((PdfAConformance) pdfIsoConformance).getConformanceLevel());
return ttfUnicodeWriter;
}
/**
* @see PdfStamperImp#createXmpWriter(java.io.ByteArrayOutputStream, com.itextpdf.text.pdf.PdfDictionary)
*/
protected XmpWriter createXmpWriter(ByteArrayOutputStream baos, PdfDictionary info) throws IOException {
return new PdfAXmpWriter(baos, info, ((PdfAConformance) pdfIsoConformance).getConformanceLevel(), this);
}
protected XmpWriter createXmpWriter(ByteArrayOutputStream baos, HashMap<String, String> info) throws IOException {
return new PdfAXmpWriter(baos, info, ((PdfAConformance) pdfIsoConformance).getConformanceLevel(), this);
}
/**
* @see com.itextpdf.text.pdf.PdfStamperImp#initPdfIsoConformance()
*/
protected PdfIsoConformance initPdfIsoConformance() {
return new PdfAConformanceImp(this);
}
protected Counter getCounter() {
return COUNTER;
}
private void readPdfAInfo() {
byte[] metadata = null;
XMPProperty pdfaidConformance = null;
XMPProperty pdfaidPart = null;
try {
metadata = reader.getMetadata();
xmpMeta = XMPMetaParser.parse(metadata, null);
pdfaidConformance = xmpMeta.getProperty(XMPConst.NS_PDFA_ID, "pdfaid:conformance");
pdfaidPart = xmpMeta.getProperty(XMPConst.NS_PDFA_ID, "pdfaid:part");
} catch (Throwable e) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("only.pdfa.documents.can.be.opened.in.PdfAStamper"));
}
if (pdfaidConformance == null || pdfaidPart == null) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("only.pdfa.documents.can.be.opened.in.PdfAStamper"));
}
switch (((PdfAConformance) pdfIsoConformance).getConformanceLevel()) {
case PDF_A_1A:
case PDF_A_1B:
if (!"1".equals(pdfaidPart.getValue())) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("only.pdfa.1.documents.can.be.opened.in.PdfAStamper", "1"));
}
break;
case PDF_A_2A:
case PDF_A_2B:
case PDF_A_2U:
if (!"2".equals(pdfaidPart.getValue())) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("only.pdfa.1.documents.can.be.opened.in.PdfAStamper", "2"));
}
break;
case PDF_A_3A:
case PDF_A_3B:
case PDF_A_3U:
if (!"3".equals(pdfaidPart.getValue())) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("only.pdfa.1.documents.can.be.opened.in.PdfAStamper", "3"));
}
break;
}
}
@Override
protected void cacheObject(PdfIndirectObject iobj) {
getPdfAChecker().cacheObject(iobj.getIndirectReference(), iobj.object);
}
private PdfAChecker getPdfAChecker() {
return ((PdfAConformanceImp)pdfIsoConformance).getPdfAChecker();
}
@Override
protected void close(Map<String, String> moreInfo) throws IOException {
super.close(moreInfo);
getPdfAChecker().close(this);
}
@Override
public PdfAnnotation createAnnotation(Rectangle rect, PdfName subtype) {
PdfAnnotation a = super.createAnnotation(rect, subtype);
if (!PdfName.POPUP.equals(subtype))
a.put(PdfName.F, new PdfNumber(PdfAnnotation.FLAGS_PRINT));
return a;
}
@Override
public PdfAnnotation createAnnotation(float llx, float lly, float urx, float ury, PdfString title, PdfString content, PdfName subtype) {
PdfAnnotation a = super.createAnnotation(llx, lly, urx, ury, title, content, subtype);
if (!PdfName.POPUP.equals(subtype))
a.put(PdfName.F, new PdfNumber(PdfAnnotation.FLAGS_PRINT));
return a;
}
@Override
public PdfAnnotation createAnnotation(float llx, float lly, float urx, float ury, PdfAction action, PdfName subtype) {
PdfAnnotation a = super.createAnnotation(llx, lly, urx, ury, action, subtype);
if (!PdfName.POPUP.equals(subtype))
a.put(PdfName.F, new PdfNumber(PdfAnnotation.FLAGS_PRINT));
return a;
}
public XMPMeta getXmpMeta() {
return xmpMeta;
}
}